Known as the Siasi Uesiliana Tau'ataina, the largest denomination in Tonga, founded the high school in 1963 with fifteen students as a continuation of the Free Wesleyan Church's commitment to educating the populace and to provide a place for further training and preparation of those willing to serve the church. The High School now serves more than 1,000 students.

The school's celebration start off with a special prayer and ground breaking ceremony led by the ex student's patron, Her Royal Highness Princess Salote Mafile'o Pilolevu Tuita. The Princess also lead the ex-students parade from the school's main Campus in Fasi to the Free Wesleyan Church at Saione. The FWC President Rev Dr 'Ahio, the Church's secretary, the school's pioneers and ex-students to last year followed-in the marching.

Following the event, featured the launching of John Thomas's (1826 missionary to Tonga) book, "The History of Tonga". The book was compiled by former principal, Rev. Dr. Geoff Cummins and edited by Dr.Nigel Statham. It followed by a luncheon and entertainment, hosted by staff and students of Tupou Tertiary Institute at Maamaloa Grounds.

The celebration continues on the next day with a memorial service led by the President of the FWC, with His Majesty King Tupou VI, the Royal Guest of Honor. During the service, there was an unveiling of the plaque at the vestry where the first classed in 1963 were held.

There were a lot of ex-students from overseas and locals joined this happy occasion, not only to mark the school's 50th year's anniversary but to highlight the school's marvelous job in upbringing the students from time to time, and the great result are, there's more ex-students working in the government sector, non-government but most of all there's a lot at the Church's office and schools.

The Celebration closed on Sunday evening with a "Polotu" farewell service at Saione.